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© The New York Public Library, 2026
The New York Public Library is a 501(c)(3) | EIN 13-1887440
New York World's Fair 1939 and 1940 Incorporated records, [microform]
Manuscripts and Archives Division, The New York Public Library. "Specifications for 500 Gallon Centrifugal Pumping Engine Qualifications for Bidders" The New York Public Library Digital Collections. 1935 - 1945. https://old-digitalcollections.nypl.org/items/b619bd9c-55d3-e6d9-e040-e00a1806748c
Manuscripts and Archives Division, The New York Public Library. "Specifications for 500 Gallon Centrifugal Pumping Engine Qualifications for Bidders" New York Public Library Digital Collections. Accessed October 1, 2026. https://old-digitalcollections.nypl.org/items/b619bd9c-55d3-e6d9-e040-e00a1806748c
Manuscripts and Archives Division, The New York Public Library. (1935 - 1945). Specifications for 500 Gallon Centrifugal Pumping Engine Qualifications for Bidders Retrieved from https://old-digitalcollections.nypl.org/items/b619bd9c-55d3-e6d9-e040-e00a1806748c
<ref name=NYPL>{{cite web | url=https://old-digitalcollections.nypl.org/items/b619bd9c-55d3-e6d9-e040-e00a1806748c | title=
(text)
Specifications for 500 Gallon Centrifugal Pumping Engine Qualifications for Bidders, (1935 - 1945)|author=Digital Collections, The New York Public Library |accessdate=October 1, 2026 |publisher=The New York Public Library, Astor, Lenox, and Tilden Foundations}}</ref>